KEY
1. Compared to 1 meter, fill in the following unit
conversions
a. 1 kilometer= 10^__3_ meter
b. 1 micrometer= 10^-6__ meter
c. 1 nanometer= 10^_-9_ meter
d. 1 picometer= 10^-12_ meter
e. 1 centimeter= 10^-2_ meter
2. Complete the following conversions using dimensional analysis. Make sure that
units cancel out and report your answers with the correct significant figures and
units.
a.) 1,561 mm → meters → km
→ 1.561 m→0.001561km
b.) 1.2 miles per hour → inches per second
Hint: 5280 feet in a mile
x x x x = 21 in/sec
1.2 𝑚𝑖
1 ℎ𝑟
5280𝑓𝑡
1 𝑚𝑖
12 𝑖𝑛
1 𝑓𝑡
1 ℎ𝑟
60 𝑚𝑖𝑛
1 𝑚𝑖𝑛
60 𝑠𝑒𝑐
3. Complete the following calculations and report with correct significant figures and
units:
c.) = 5.7cm/min
17.2𝑐𝑚
3.0𝑚𝑖𝑛
d.) 0.5879 cm + 32.31cm= 32.90 cm
e.) 400.00 mL x 0.000032 mL=0.013 mL
4. Report each of the following answers with 3 significant figures:
f.) 4/1600= 2.50 x10-3
g.) 4 x 1600=6.40x103
